AS21HPA High Power Bluetooth Digital Amplifier – 2.1 Channel Subwoofer

Unleash room-filling, concert-quality audio with the AS21HPA 2.1 Channel Bluetooth Digital Power Amplifier. Built around the renowned TPA3255 chip, this beast delivers a staggering 300W × 2 (stereo) + 600W (subwoofer) — a total of 1200W of clean, distortion-free power that brings your music, movies, and gaming soundtracks to life like never before.

Whether you're building a home theater, a DJ rig, or a high-fidelity listening room, the AS21HPA is engineered for audiophiles who refuse to compromise. Its stainless steel construction speaks to its durability, while its Class-D efficiency keeps heat low and power output sky high.

Made in Mainland China.

Key Features

Massive Power Output: 300W × 2 stereo channels + 600W dedicated subwoofer channel for thunderous, layered sound
TPA3255 Chipset: Texas Instruments' flagship Class-D amplifier IC — industry-leading efficiency with ultra-low THD+N for audiophile-grade fidelity
Bluetooth Connectivity: Wireless audio streaming from smartphones, tablets, PCs, and more — no cables required
2.1 Channel Configuration: Dedicated left, right, and subwoofer outputs for a full, immersive soundstage
Stainless Steel Build: Robust, premium housing designed for long-lasting performance in demanding environments
High Efficiency Class-D Design: Runs cool and efficiently, making it ideal for extended listening sessions
Versatile Compatibility: Works with passive speakers, subwoofer cabinets, PA systems, and home audio setups

Specifications

Model	AS21HPA
Amplifier Class	Class-D (Digital)
Chipset	TPA3255 (Texas Instruments)
Channel Configuration	2.1 (Stereo + Subwoofer)
Stereo Output	300W × 2
Subwoofer Output	600W
Connectivity	Bluetooth + Wired Input
Material	Stainless Steel
Origin	Mainland China

Perfect For

Home theater and hi-fi audio systems
DJ booths and live sound setups
Recording studios and rehearsal spaces
Powered subwoofer and satellite speaker arrays
Audiophiles upgrading from conventional AVR receivers

Why the TPA3255 Matters

The Texas Instruments TPA3255 is widely regarded as one of the best Class-D amplifier chips available. It achieves up to 96% efficiency and an exceptionally low Total Harmonic Distortion + Noise (THD+N) rating, meaning you get powerful, crystal-clear audio with virtually no unwanted coloration or noise floor. Learn more about audio amplifier technology and Class-D efficiency on Energy.gov – Electronics & Efficiency.

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Frequently Asked Questions

Q: What is the total power output of the AS21HPA Bluetooth amplifier?

A: The AS21HPA delivers a combined total of 1200W — specifically 300W per stereo channel (left and right) and 600W dedicated to the subwoofer channel, making it ideal for high-power home audio and professional audio setups.

Q: What is the TPA3255 chip and why is it important?

A: The TPA3255 is a flagship Class-D digital amplifier chip from Texas Instruments. It is renowned for its high efficiency (up to 96%), extremely low harmonic distortion, and ability to drive high-power speaker loads cleanly — resulting in rich, detailed sound reproduction.

Q: Does the AS21HPA support Bluetooth audio streaming?

A: Yes, the AS21HPA features built-in Bluetooth connectivity, allowing you to wirelessly stream audio from smartphones, tablets, laptops, and other Bluetooth-enabled devices with ease.

Q: What types of speakers are compatible with this amplifier?

A: The AS21HPA is compatible with passive stereo speakers and a dedicated passive subwoofer cabinet. It is suitable for home theater speakers, bookshelf speakers, floor-standing speakers, and subwoofer enclosures within the appropriate impedance and power handling range.

Q: Is the amplifier built to last?

A: Yes. The AS21HPA features a stainless steel housing for robust durability, and the Class-D design runs at high efficiency with low heat generation, extending the lifespan of the unit even during prolonged use.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

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